The AFL CLETOP 8500-10-0012MZ is the replacement cleaning tape for the CLETOP Fiber Optic Connector Cleaning Cassette. This fully replaceable cleaning tape can be used for over 400 connectors in the CLETOP Ferrule Cleaner. It is designed to clean 2.5-mm ferrules on SC, FC, ST, D4, DIN and LC connectors. Push the CLETOP lever down to expose two slots in plastic insert over tape. Wipe each connector twice - once down each slot.